NixOS · Jan 6, 2020 · Jan 6, 2020 · Jan 6, 2020 · Jan 6, 2020
diff --git a/lib/tests/modules.sh b/lib/tests/modules.sh
@@ -87,36 +87,36 @@ checkConfigOutput "false" "$@" ./define-force-enable.nix
 checkConfigOutput "false" "$@" ./define-enable-force.nix
 
 # Check mkForce with option and submodules.
-checkConfigError 'attribute .*foo.* .* not found' config.loaOfSub.foo.enable ./declare-loaOfSub-any-enable.nix
-checkConfigOutput 'false' config.loaOfSub.foo.enable ./declare-loaOfSub-any-enable.nix ./define-loaOfSub-foo.nix
-set -- config.loaOfSub.foo.enable ./declare-loaOfSub-any-enable.nix ./define-loaOfSub-foo-enable.nix
+checkConfigError 'attribute .*foo.* .* not found' config.attrsOfSub.foo.enable ./declare-attrsOfSub-any-enable.nix
+checkConfigOutput 'false' config.attrsOfSub.foo.enable ./declare-attrsOfSub-any-enable.nix ./define-attrsOfSub-foo.nix
+set -- config.attrsOfSub.foo.enable ./declare-attrsOfSub-any-enable.nix ./define-attrsOfSub-foo-enable.nix
 checkConfigOutput 'true' "$@"
-checkConfigOutput 'false' "$@" ./define-force-loaOfSub-foo-enable.nix
-checkConfigOutput 'false' "$@" ./define-loaOfSub-force-foo-enable.nix
-checkConfigOutput 'false' "$@" ./define-loaOfSub-foo-force-enable.nix
-checkConfigOutput 'false' "$@" ./define-loaOfSub-foo-enable-force.nix
+checkConfigOutput 'false' "$@" ./define-force-attrsOfSub-foo-enable.nix
+checkConfigOutput 'false' "$@" ./define-attrsOfSub-force-foo-enable.nix
+checkConfigOutput 'false' "$@" ./define-attrsOfSub-foo-force-enable.nix
+checkConfigOutput 'false' "$@" ./define-attrsOfSub-foo-enable-force.nix
 
 # Check overriding effect of mkForce on submodule definitions.
-checkConfigError 'attribute .*bar.* .* not found' config.loaOfSub.bar.enable ./declare-loaOfSub-any-enable.nix ./define-loaOfSub-foo.nix
-checkConfigOutput 'false' config.loaOfSub.bar.enable ./declare-loaOfSub-any-enable.nix ./define-loaOfSub-foo.nix ./define-loaOfSub-bar.nix
-set -- config.loaOfSub.bar.enable ./declare-loaOfSub-any-enable.nix ./define-loaOfSub-foo.nix ./define-loaOfSub-bar-enable.nix
+checkConfigError 'attribute .*bar.* .* not found' config.attrsOfSub.bar.enable ./declare-attrsOfSub-any-enable.nix ./define-attrsOfSub-foo.nix
+checkConfigOutput 'false' config.attrsOfSub.bar.enable ./declare-attrsOfSub-any-enable.nix ./define-attrsOfSub-foo.nix ./define-attrsOfSub-bar.nix
+set -- config.attrsOfSub.bar.enable ./declare-attrsOfSub-any-enable.nix ./define-attrsOfSub-foo.nix ./define-attrsOfSub-bar-enable.nix
 checkConfigOutput 'true' "$@"
-checkConfigError 'attribute .*bar.* .* not found' "$@" ./define-force-loaOfSub-foo-enable.nix
-checkConfigError 'attribute .*bar.* .* not found' "$@" ./define-loaOfSub-force-foo-enable.nix
-checkConfigOutput 'true' "$@" ./define-loaOfSub-foo-force-enable.nix
-checkConfigOutput 'true' "$@" ./define-loaOfSub-foo-enable-force.nix
+checkConfigError 'attribute .*bar.* .* not found' "$@" ./define-force-attrsOfSub-foo-enable.nix
+checkConfigError 'attribute .*bar.* .* not found' "$@" ./define-attrsOfSub-force-foo-enable.nix
+checkConfigOutput 'true' "$@" ./define-attrsOfSub-foo-force-enable.nix
+checkConfigOutput 'true' "$@" ./define-attrsOfSub-foo-enable-force.nix
 
 # Check mkIf with submodules.
-checkConfigError 'attribute .*foo.* .* not found' config.loaOfSub.foo.enable ./declare-enable.nix ./declare-loaOfSub-any-enable.nix
-set -- config.loaOfSub.foo.enable ./declare-enable.nix ./declare-loaOfSub-any-enable.nix
-checkConfigError 'attribute .*foo.* .* not found' "$@" ./define-if-loaOfSub-foo-enable.nix
-checkConfigError 'attribute .*foo.* .* not found' "$@" ./define-loaOfSub-if-foo-enable.nix
-checkConfigError 'attribute .*foo.* .* not found' "$@" ./define-loaOfSub-foo-if-enable.nix
-checkConfigOutput 'false' "$@" ./define-loaOfSub-foo-enable-if.nix
-checkConfigOutput 'true' "$@" ./define-enable.nix ./define-if-loaOfSub-foo-enable.nix
-checkConfigOutput 'true' "$@" ./define-enable.nix ./define-loaOfSub-if-foo-enable.nix
-checkConfigOutput 'true' "$@" ./define-enable.nix ./define-loaOfSub-foo-if-enable.nix
-checkConfigOutput 'true' "$@" ./define-enable.nix ./define-loaOfSub-foo-enable-if.nix
+checkConfigError 'attribute .*foo.* .* not found' config.attrsOfSub.foo.enable ./declare-enable.nix ./declare-attrsOfSub-any-enable.nix
+set -- config.attrsOfSub.foo.enable ./declare-enable.nix ./declare-attrsOfSub-any-enable.nix
+checkConfigError 'attribute .*foo.* .* not found' "$@" ./define-if-attrsOfSub-foo-enable.nix
+checkConfigError 'attribute .*foo.* .* not found' "$@" ./define-attrsOfSub-if-foo-enable.nix
+checkConfigError 'attribute .*foo.* .* not found' "$@" ./define-attrsOfSub-foo-if-enable.nix
+checkConfigOutput 'false' "$@" ./define-attrsOfSub-foo-enable-if.nix
+checkConfigOutput 'true' "$@" ./define-enable.nix ./define-if-attrsOfSub-foo-enable.nix
+checkConfigOutput 'true' "$@" ./define-enable.nix ./define-attrsOfSub-if-foo-enable.nix
+checkConfigOutput 'true' "$@" ./define-enable.nix ./define-attrsOfSub-foo-if-enable.nix
+checkConfigOutput 'true' "$@" ./define-enable.nix ./define-attrsOfSub-foo-enable-if.nix
 
 # Check disabledModules with config definitions and option declarations.
 set -- config.enable ./define-enable.nix ./declare-enable.nix
@@ -138,7 +138,7 @@ checkConfigError 'while evaluating the module argument .*custom.* in .*import-cu
 checkConfigError 'infinite recursion encountered' "$@"
 
 # Check _module.check.
-set -- config.enable ./declare-enable.nix ./define-enable.nix ./define-loaOfSub-foo.nix
+set -- config.enable ./declare-enable.nix ./define-enable.nix ./define-attrsOfSub-foo.nix
 checkConfigError 'The option .* defined in .* does not exist.' "$@"
 checkConfigOutput "true" "$@" ./define-module-check.nix
 
@@ -152,12 +152,6 @@ checkConfigOutput "12" config.value ./declare-coerced-value-unsound.nix
 checkConfigError 'The option value .* in .* is not.*8 bit signed integer.* or string convertible to it' config.value ./declare-coerced-value-unsound.nix ./define-value-string-bigint.nix
 checkConfigError 'unrecognised JSON value' config.value ./declare-coerced-value-unsound.nix ./define-value-string-arbitrary.nix
 
-# Check loaOf with long list.
-checkConfigOutput "1 2 3 4 5 6 7 8 9 10" config.result ./loaOf-with-long-list.nix
-
-# Check loaOf with many merges of lists.
-checkConfigOutput "1 2 3 4 5 6 7 8 9 10" config.result ./loaOf-with-many-list-merges.nix
-
 # Check mkAliasOptionModule.
 checkConfigOutput "true" config.enable ./alias-with-priority.nix
 checkConfigOutput "true" config.enableAlias ./alias-with-priority.nix

diff --git a/...s/modules/declare-loaOfSub-any-enable.nix → ...modules/declare-attrsOfSub-any-enable.nix b/...s/modules/declare-loaOfSub-any-enable.nix → ...modules/declare-attrsOfSub-any-enable.nix
@@ -17,10 +17,10 @@ in
 
 {
   options = {
-    loaOfSub = lib.mkOption {
+    attrsOfSub = lib.mkOption {
       default = {};
       example = {};
-      type = lib.types.loaOf (lib.types.submodule [ submod ]);
+      type = lib.types.attrsOf (lib.types.submodule [ submod ]);
       description = ''
         Some descriptive text
       '';

diff --git a/lib/tests/modules/define-attrsOfSub-bar-enable.nix b/lib/tests/modules/define-attrsOfSub-bar-enable.nix
@@ -0,0 +1,3 @@
+{
+  attrsOfSub.bar.enable = true;
+}
diff --git a/lib/tests/modules/define-attrsOfSub-bar.nix b/lib/tests/modules/define-attrsOfSub-bar.nix
@@ -0,0 +1,3 @@
+{
+  attrsOfSub.bar = {};
+}
diff --git a/lib/tests/modules/define-attrsOfSub-foo-enable-force.nix b/lib/tests/modules/define-attrsOfSub-foo-enable-force.nix
@@ -0,0 +1,5 @@
+{ lib, ... }:
+
+{
+  attrsOfSub.foo.enable = lib.mkForce false;
+}
diff --git a/lib/tests/modules/define-attrsOfSub-foo-enable-if.nix b/lib/tests/modules/define-attrsOfSub-foo-enable-if.nix
@@ -0,0 +1,5 @@
+{ config, lib, ... }:
+
+{
+  attrsOfSub.foo.enable = lib.mkIf config.enable true;
+}
diff --git a/lib/tests/modules/define-attrsOfSub-foo-enable.nix b/lib/tests/modules/define-attrsOfSub-foo-enable.nix
@@ -0,0 +1,3 @@
+{
+  attrsOfSub.foo.enable = true;
+}
diff --git a/...ules/define-loaOfSub-foo-force-enable.nix → ...es/define-attrsOfSub-foo-force-enable.nix b/...ules/define-loaOfSub-foo-force-enable.nix → ...es/define-attrsOfSub-foo-force-enable.nix
@@ -1,7 +1,7 @@
 { lib, ... }:
 
 {
-  loaOfSub.foo = lib.mkForce {
+  attrsOfSub.foo = lib.mkForce {
     enable = false;
   };
 }
diff --git a/...modules/define-loaOfSub-foo-if-enable.nix → ...dules/define-attrsOfSub-foo-if-enable.nix b/...modules/define-loaOfSub-foo-if-enable.nix → ...dules/define-attrsOfSub-foo-if-enable.nix
@@ -1,7 +1,7 @@
 { config, lib, ... }:
 
 {
-  loaOfSub.foo = lib.mkIf config.enable {
+  attrsOfSub.foo = lib.mkIf config.enable {
     enable = true;
   };
 }
diff --git a/lib/tests/modules/define-attrsOfSub-foo.nix b/lib/tests/modules/define-attrsOfSub-foo.nix
@@ -0,0 +1,3 @@
+{
+  attrsOfSub.foo = {};
+}
diff --git a/...ules/define-loaOfSub-force-foo-enable.nix → ...es/define-attrsOfSub-force-foo-enable.nix b/...ules/define-loaOfSub-force-foo-enable.nix → ...es/define-attrsOfSub-force-foo-enable.nix
@@ -1,7 +1,7 @@
 { lib, ... }:
 
 {
-  loaOfSub = lib.mkForce {
+  attrsOfSub = lib.mkForce {
     foo.enable = false;
   };
 }
diff --git a/...modules/define-loaOfSub-if-foo-enable.nix → ...dules/define-attrsOfSub-if-foo-enable.nix b/...modules/define-loaOfSub-if-foo-enable.nix → ...dules/define-attrsOfSub-if-foo-enable.nix
@@ -1,7 +1,7 @@
 { config, lib, ... }:
 
 {
-  loaOfSub = lib.mkIf config.enable {
+  attrsOfSub = lib.mkIf config.enable {
     foo.enable = true;
   };
 }
diff --git a/lib/tests/modules/define-force-attrsOfSub-foo-enable.nix b/lib/tests/modules/define-force-attrsOfSub-foo-enable.nix
@@ -0,0 +1,5 @@
+{ lib, ... }:
+
+lib.mkForce {
+  attrsOfSub.foo.enable = false;
+}
diff --git a/lib/tests/modules/define-force-loaOfSub-foo-enable.nix b/lib/tests/modules/define-force-loaOfSub-foo-enable.nix
diff --git a/...modules/define-if-loaOfSub-foo-enable.nix → ...dules/define-if-attrsOfSub-foo-enable.nix b/...modules/define-if-loaOfSub-foo-enable.nix → ...dules/define-if-attrsOfSub-foo-enable.nix
@@ -1,5 +1,5 @@
 { config, lib, ... }:
 
 lib.mkIf config.enable {
-  loaOfSub.foo.enable = true;
+  attrsOfSub.foo.enable = true;
 }
diff --git a/lib/tests/modules/define-loaOfSub-bar-enable.nix b/lib/tests/modules/define-loaOfSub-bar-enable.nix
diff --git a/lib/tests/modules/define-loaOfSub-bar.nix b/lib/tests/modules/define-loaOfSub-bar.nix
diff --git a/lib/tests/modules/define-loaOfSub-foo-enable-force.nix b/lib/tests/modules/define-loaOfSub-foo-enable-force.nix
diff --git a/lib/tests/modules/define-loaOfSub-foo-enable-if.nix b/lib/tests/modules/define-loaOfSub-foo-enable-if.nix
diff --git a/lib/tests/modules/define-loaOfSub-foo-enable.nix b/lib/tests/modules/define-loaOfSub-foo-enable.nix
diff --git a/lib/tests/modules/define-loaOfSub-foo.nix b/lib/tests/modules/define-loaOfSub-foo.nix
diff --git a/lib/tests/modules/loaOf-with-long-list.nix b/lib/tests/modules/loaOf-with-long-list.nix
diff --git a/lib/tests/modules/loaOf-with-many-list-merges.nix b/lib/tests/modules/loaOf-with-many-list-merges.nix
diff --git a/lib/types.nix b/lib/types.nix
@@ -295,34 +295,51 @@ rec {
     # List or attribute set of ...
     loaOf = elemType:
       let
-        convertAllLists = defs:
+        convertAllLists = loc: defs:
           let
             padWidth = stringLength (toString (length defs));
             unnamedPrefix = i: "unnamed-" + fixedWidthNumber padWidth i + ".";
           in
-            imap1 (i: convertIfList (unnamedPrefix i)) defs;
-
-        convertIfList = unnamedPrefix: def:
+            imap1 (i: convertIfList loc (unnamedPrefix i)) defs;
+        convertIfList = loc: unnamedPrefix: def:
           if isList def.value then
             let
               padWidth = stringLength (toString (length def.value));
               unnamed = i: unnamedPrefix + fixedWidthNumber padWidth i;
+              res =
+                { inherit (def) file;
+                  value = listToAttrs (
+                    imap1 (elemIdx: elem:
+                      { name  = elem.name or (unnamed elemIdx);
+                        value = elem;
+                      }) def.value);
+                };
+              option = concatStringsSep "." loc;
+              sample = take 3 def.value;
+              list = concatMapStrings (x: ''{ name = "${x.name or "unnamed"}"; ...} '') sample;
+              set = concatMapStrings (x: ''${x.name or "unnamed"} = {...}; '') sample;
+              msg = ''
+                In file ${def.file}
+                a list is being assigned to the option config.${option}.
+                This will soon be an error as type loaOf is deprecated.
+                See https://git.io/fj2zm for more information.
+                Do
+                  ${option} =
+                    { ${set}...}
+                instead of
+                  ${option} =
+                    [ ${list}...]
+              '';
             in
-              { inherit (def) file;
-                value = listToAttrs (
-                  imap1 (elemIdx: elem:
-                    { name = elem.name or (unnamed elemIdx);
-                      value = elem;
-                    }) def.value);
-              }
+              lib.warn msg res
           else
             def;
         attrOnly = attrsOf elemType;
       in mkOptionType rec {
         name = "loaOf";
         description = "list or attribute set of ${elemType.description}s";
         check = x: isList x || isAttrs x;
-        merge = loc: defs: attrOnly.merge loc (convertAllLists defs);
+        merge = loc: defs: attrOnly.merge loc (convertAllLists loc defs);
         getSubOptions = prefix: elemType.getSubOptions (prefix ++ ["<name?>"]);
         getSubModules = elemType.getSubModules;
         substSubModules = m: loaOf (elemType.substSubModules m);

diff --git a/nixos/modules/config/i18n.nix b/nixos/modules/config/i18n.nix
@@ -80,14 +80,11 @@ with lib;
     };
 
     # ‘/etc/locale.conf’ is used by systemd.
-    environment.etc = singleton
-      { target = "locale.conf";
-        source = pkgs.writeText "locale.conf"
-          ''
-            LANG=${config.i18n.defaultLocale}
-            ${concatStringsSep "\n" (mapAttrsToList (n: v: ''${n}=${v}'') config.i18n.extraLocaleSettings)}
-          '';
-      };
+    environment.etc."locale.conf".source = pkgs.writeText "locale.conf"
+      ''
+        LANG=${config.i18n.defaultLocale}
+        ${concatStringsSep "\n" (mapAttrsToList (n: v: ''${n}=${v}'') config.i18n.extraLocaleSettings)}
+      '';
 
   };
 }
diff --git a/nixos/modules/config/ldap.nix b/nixos/modules/config/ldap.nix
@@ -224,7 +224,9 @@ in
 
   config = mkIf cfg.enable {
 
-    environment.etc = optional (!cfg.daemon.enable) ldapConfig;
+    environment.etc = optionalAttrs (!cfg.daemon.enable) {
+      "ldap.conf" = ldapConfig;
+    };
 
     system.activationScripts = mkIf (!cfg.daemon.enable) {
       ldap = stringAfter [ "etc" "groups" "users" ] ''

diff --git a/nixos/modules/config/pulseaudio.nix b/nixos/modules/config/pulseaudio.nix
@@ -215,9 +215,8 @@ in {
 
   config = mkMerge [
     {
-      environment.etc = singleton {
-        target = "pulse/client.conf";
-        source = clientConf;
+      environment.etc = {
+        "pulse/client.conf".source = clientConf;
       };
 
       hardware.pulseaudio.configFile = mkDefault "${getBin overriddenPackage}/etc/pulse/default.pa";
@@ -228,19 +227,16 @@ in {
 
       sound.enable = true;
 
-      environment.etc = [
-        { target = "asound.conf";
-          source = alsaConf; }
+      environment.etc = {
+        "asound.conf".source = alsaConf;
 
-        { target = "pulse/daemon.conf";
-          source = writeText "daemon.conf" (lib.generators.toKeyValue {} cfg.daemon.config); }
+        "pulse/daemon.conf".source = writeText "daemon.conf"
+          (lib.generators.toKeyValue {} cfg.daemon.config);
 
-        { target = "openal/alsoft.conf";
-          source = writeText "alsoft.conf" "drivers=pulse"; }
+        "openal/alsoft.conf".source = writeText "alsoft.conf" "drivers=pulse";
 
-        { target = "libao.conf";
-          source = writeText "libao.conf" "default_driver=pulse"; }
-      ];
+        "libao.conf".source = writeText "libao.conf" "default_driver=pulse";
+      };
 
       # Disable flat volumes to enable relative ones
       hardware.pulseaudio.daemon.config.flat-volumes = mkDefault "no";
@@ -275,9 +271,8 @@ in {
     })
 
     (mkIf nonSystemWide {
-      environment.etc = singleton {
-        target = "pulse/default.pa";
-        source = myConfigFile;
+      environment.etc = {
+        "pulse/default.pa".source = myConfigFile;
       };
       systemd.user = {
         services.pulseaudio = {